40432256 has 48 divisors (see below), whose sum is σ = 85643790. Its totient is φ = 19009536.

The previous prime is 40432237. The next prime is 40432303. The reversal of 40432256 is 65223404.

It can be written as a sum of positive squares in 3 ways, for example, as 38241856 + 2190400 = 6184^2 + 1480^2 .

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 36446 + ... + 37538.

Almost surely, 2^40432256 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 40432256, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (42821895).

40432256 is an abundant number, since it is smaller than the sum of its proper divisors (45211534).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

40432256 is a wasteful number, since it uses less digits than its factorization.

40432256 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1141 (or 1112 counting only the distinct ones).

The product of its (nonzero) digits is 5760, while the sum is 26.

The square root of 40432256 is about 6358.6363317932. The cubic root of 40432256 is about 343.2226905449. Note that the first 3 decimals are identical.

The spelling of 40432256 in words is "forty million, four hundred thirty-two thousand, two hundred fifty-six".